Predictions of flight performance in birds rely heavily on aerodynamic theory because it is difficult to measure energy consumption in flight. Fresh data leave part of the theory up in the air.
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Å. LINDSTRÖM
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Rayner, J. Fat and formation in flight. Nature 413, 685–686 (2001). https://doi.org/10.1038/35099643
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DOI: https://doi.org/10.1038/35099643
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